Advertisement
4
:
}
:
9900Z/89002DB/790
3. For Adjustment,
run the unit for more than 5 minutes
after the power is switched on.
Note:
1. Master Volume
..... - Minimum
2. Room Temperature
18°C ~ 28°C (65°F ~ 85°F)
STEP
SUBJECT
MEASURE OUTPUT
ADJUST
ADJUST FOR
REMARKS
© Before turning ON
power switch, turn
jVR2 fully counter-
clockwise.
This bias current
value into voltage b
Ohms law.
:
© 9900Z/8900ZDB
Between JP4 & emitter terminal kQ2 on F-3308
(As shown @) & ®) in Fig. 4-4)
e@ 7900Z
Between emitter terminals kQ12 & kQ13 on F-3407
Top of View on page 20)
1.
| Bias Current
Adj. L-ch
kVR1
(L-ch)
(F-3308)
kVR1 (L-ch)
(F-3407) |
(As shown €) &
© 9900Z/8900ZDB
Between JP1 & emitter terminal kQ2 on F-3308
(As shown©) & (D) in Fig. 4-4)
© 7900Z
Between emitter terminals kQ12 & kQ13 on F-3407
(As shown
&(H)
Top of View on page 20)
2. | Bias Current
Adj. R-ch
kVRt1 (R-ch)
(F-3308)
KVR (R-ch)
(F-3407)
Fig. 4-4 (9900Z, 8900ZDB)
ape
@ Selection Intermediate Frequencies (FM)
@ Note on Photo-couplers Replacement
*
When the intermediate frequency (shown by color) of the cera-
*
Unity the ranks of photo-couplers
(fPH51, fPH52) on the F-3313
mic filter is changed, rewire between the terminal No. 58 or 59
with same color.
(F-3300) and the point (A) or
(F-3298) in accordance with
~*
When the rank (shown by color) of the photo-coupler is changed,
table 1.
replace the Resistor (fR51) as shwon on the table 2.
Unify the color marks of FM ceramic filters (4CF1, dCF2, dCF3
and dCF4
(9900Z Only) ) on the F-3300 with same color.
*
In 9900Z,
when
the FM
ceramic
filter is replaced
with new
ceramic filter set (dCF1
~ dCF4/Stock
No. 07248600), use a
ceramic filter marked with J the dCF4 only.
©
Table 2
LE Ne ee a a ea
TE
*
Photo Coupler
(fPH51, fPH52)
Resistor (fR51)
Stock No.
nee"
Coupling
Rankings | Value (2)
@
Table 1
CHANGE
OF COLOURING
(Intermediate Frequency)
330
00233200
FROM
TO
ORANGE
100
00224800
82
00239300
RED
Remove a wire between Terminal No. 58 or
WHITE
(10.750 MHz)
(10.700 MHz)
59 (F-3300) and Point @ (F-3298).
BLACK
(10.650 MHz)
Change_a connection of Point (A) to
Point () (F-3298).
RED
(10.700 MHz)
WHITE
(10.750 MHz)
Connect a wire of 10 inch between Terminal
No. 59 and Point @ (F-3298).
BLACK
(10.650 MHz)
Connect a wire of
10 inch between Terminal
No. 58 and Point () (F-3298).
BLACK
(10.650 MHz)
WHITE
(10.750 MHz)
Change _a connection of Point ® to
Point (A) (F-3298).
RED
(10.700 MHz)
Remove a wire between Terminal No. 58 or
59 (F-3300) and Point @®) (F-3298).
F-3298
(Conductor Side)
10
Advertisement
